Severity scale:  
  (98/100)

Cryptor2.0 ransomware. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Ransomware

Cryptor2.0 ransomware is the newest version of Ryuk virus that originally targeted high-profile organizations

Cryptor2.0 ransomware
Cryptor2.0 is a file locker that comes from the infamous Ryuk ransomware family

Cryptor2.0 ransomware is a file locking virus that was spotted at the end of January 2019. Malware stems from the infamous Ryuk ransomware, which is speculated to be connected to the North-Korean Lazarus hacking group. This variant uses Microsoft Enhanced RSA and AES encryption algorithms to lock up data and then adds .RYK file extension to pictures, videos, databases, documents, etc. Next, Cryptor2.0 ransomware contacts a remote server that is controlled by hackers and drops a ransom note ReadMe.txt into each of the folders. Victims are informed that their personal files have been encoded and only a unique key can unlock them. They are asked to contact crooks via DejackomeAjna@protonmail.com or ElmersVictoria@tutanota.com for Bitcoin wallet information that the ransom should be transferred to, as well as the ransom size.

Name Cryptor2.0
Type Ransomware
Family Ryuk
Ciphers RSA and AES
File extension .RYK
Ransom note ReadMe.txt
Contact DejackomeAjna@protonmail.com or ElmersVictoria@tutanota.com
Decryptable? No
Elimination Use security software like Reimage that can detect[1] the virus

Ryuk ransomware created real chaos among users and organizations when it started to infiltrate systems all over the world back in summer 2018. It later devastated various newspapers in the US, preventing Tribune Publishing and Los Angeles Times delivering new issues on time.[2] It asked between 15 to 20 BTC for the decryptor, and managed to earn a fortune during its reign. As evident, malware authors are not backing away and continuing their campaign with the release of Cryptor2.0 ransomware.

For Cryptor2.0 ransomware removal, users need to choose software that can recognize the threat. Currently, 47 AV engines detect the malicious dropper file as:[1]

  • Dropped:Trojan.GenericKD.31536019
  • TR/FileCoder.yiilk
  • TrojanRansom.Agent
  • a variant of Win32/Filecoder.NTB
  • Ransom:Win32/Ryuk.S!MTB
  • W32.Ransom.Gen, etc.

As soon as Cryptor2.0 virus modifies the system files and encrypts data, it drops the ransom note which reads as follows:

Your network has been penetrated.
All files on each host in the network have been encrypted with a strong algorithm.
Backups were either encrypted
Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover.
We exclusively have decryption software for your situation.
<…>
To get info (decrypt your files) contact us at
DejackomeAjna@protonmail.com or ElmersVictoria@tutanota.com
You will receive btc address for payment in the reply letter

Ryuk
No system is safe

Cryptor2.0 ransomware authors also offer to send two files for test decryption. This action is done to raise a false feeling of trust in victims, which would make them more likely to pay the ransom. However, even with test decryption being successful, there is no guarantee that users will receive full decryptor for .RYK encoded files.

Security researchers also vote against paying the ransom, as such action would simple encourage cybercriminals to improve the code and produce more sophisticated viruses. Thus, victims should remove Cryptor2.0 ransomware with the help of reputable security software like Reimage – it can detect all the malicious elements of malware and eliminate them.

Common ransomware distribution methods

Ransomware is a dangerous cyber infection, as it leaves files locked even after its removal. Therefore, it is vital to use maximum protection measures when it comes to computer security.

Ransomware authors usually employ a variety of distribution techniques, most prominent of them being the spam emails. Phishing emails are often sent to thousands of victims and include attachments or malicious links. As soon as users click on those – malware is executed on the system and files encrypted.

Another technique which recently grew in popularity due to “on the spot response” functionality[3] is the brute-forcing. This allows hackers to scan the internet for vulnerable RDP connections and use a preset list of most commonly used passwords. Consequently, bad actors can manually install ransomware into the computer. This is extremely common in targeted attacks against various businesses and organizations.

Additionally, malware authors use exploit kits, fake updates, malicious JavaScripts, and other techniques to infect as many users as possible. To protect yourself from ransomware attacks, use comprehensive security software, patch your system, prepare backups of your files, do not open spam emails casually, use strong passwords, and generally be more careful when browsing the web.

Cryptor2.0 ransomware removal instructions

To remove Cryptor2.0 virus, you should choose appropriate anti-malware software. There are plenty available on the market, so choose the one that suits you best, although we recommend using Reimage. In case Cryptor2.0 ransomware prevents security software from working normally, enter Safe Mode with Networking as explained below.

Unfortunately, but the malware is not currently decryptable. Therefore, regaining access to files without paying crooks might be quite tricky. Nevertheless, users can wait till cybersecurity researchers create an official decryptor or can try third-party recovery software as an immediate remedy. Remember, you should only try to recover your files after Cryptor2.0 ransomware removal, as your data would be encrypted again.

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Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Cryptor2.0 virus, follow these steps:

Remove Cryptor2.0 using Safe Mode with Networking

In case Cryptor2.0 ransomware prevents security software from working correctly, use these steps to enter Safe Mode with Networking:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Cryptor2.0

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Cryptor2.0 removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Cryptor2.0 using System Restore

System Restore is another method that can be used to disable malware's functionality:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Cryptor2.0. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Cryptor2.0 removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Cryptor2.0 from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Cryptor2.0, you can use several methods to restore them:

Data Recovery Pro can be used to attempt file recovery

This tool is professional software that can recover corrupted or accidentally deleted files. Also, it might help you recover .RYK files.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Cryptor2.0 ransomware;
  • Restore them.

Make use of Windows Previous Versions feature

This option is only available for those who set up the System Restore point before the virus attacked.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer might be able to help

ShadowExplorer is a program that can recover all your data if Cryptor2.0 virus failed to delete Shadow Volume Copies.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

No decryptor is available yet

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Cryptor2.0 and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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References